Molding-machine.



nNrrnn srATns A'rEN-r oFF-Ion EDGAR H. MUMF'oRnoF NEwTowN TOWNSHIP, DELAWARE coUNTY', PENNSYLVANIA.

MOLDINGMACH|NE.

Specification of Letters Patent.

Patented Jan. 29, 1907.

Application filed February 19, 1906. Serial No. 301,842.

To (/,ZZ whom, it may concern:

Be it known that-I, EDGAR H. MUMFoRD, a citizen of the United States, residing in New.- town township, in the. county of Delaware and State of Pennsylvania, have invented certain new and useful Improvements in Molding-Machines, of which the following is a speciiication. v

The objects of the invention are, to provide a molding machine in which the jolt ramming mechanism is separable from the pattern drawing machine, whereby the attern drawing may be effected either while the pattern drawing machine is on the jolt ramming mechanism or after removal therefrom, and to provide a jolt ramming mechanism adapted to do the ramming for anyA desired number of pattern drawing machines simultaneously. One form of the machine is illustrated in the accompanying drawing, whereinv Figure 1 is a plan view showing the top of the jolt ramming table, and

Figure 2 is a side elevation showing the table with a pattern drawing machine seated thereon, the bottom, of the table being broken away to more clearly show the means for operating the table.

It has been common heretofore to place a plurality of pattern drawing machines upon a revolving table in such a way that the various molds are brought past a jolt ralnming device successively for. preliminary packing of the `sand and. subsequently past other de-Y vices for iinally compacting the molds, but,

insofar as I know, it is new to provide a plurality of pattern crawlng machines upon a single jolt ra'mrning table, all vertically movl .v ablebodily. 'It is also new to place a single 4.o upon a jolting tablefin the manner hereinafpattern drawing machine entire removable ter set forth, or tdso mount a plurality of such machines, and my invention compre-l hends these constructions.

In the drawing 3 represents the j olting table which is provided on its upper surface, in

`the present instance, with'a plurality of up-lstanding dowel pins 4, and is carried on the iiu.1d foperated piston 7. This piston operates m vthebase 9 in the usual mannen the liolting being produced by the fall of the table against the stationary parts. g In'Figure drawing machines of all sizes and t 42 a pattern drawing machine is shown seated upon the ramm'ing table. This pattern drawing machine may beV of 4any type, it being only necessary that such machine be provided With a holding means to co-act'wi th' the dowel pins 4. As shown, the machine is provided With a socket 8 into which the dowel pin fits and holds the machine in proper position. The machine is also provided with legs 6 in order to hold the device level, in the present instance three legs being used. In

practice a machine may be placed over each of the pins 4 or only a portion of these may be used, though always symmetrically, as it is recognized as essential that the masses of the falling parts should imite in a common center of gravity over the center of the. anvil 110. It will also be apparent that the number of pins may be varied to suit the requirements and such number may range from one up to an even greater number than shown in `may be done for several pattern drawing machines,'. while the operations of lacing and returning flasks and sand vand dp patterns are being performed.

Having. thus' described my invention and illustrated its use, what I claim as new, and

desire to secure by Letters Patent, is the following 1. The combination Aof a golt'ramming table rovided with areleasab e'holding means, an a pattern` drawing machine provided :withmeans for being held evenly su ported and means vfor engaging the releasab e holdingmeans.

2. The combination of' a vertically mov-, able jolt; ramr'ning table provided withadowel'vpin and a pattern' drawing machine provided with a socket for engaging the dowel pin.

pattern drawing ied at one place rawing y IOO l3. In combination,y a vertically movable jolt' ramming table and a plurality of pattern drawing machines adapted to be secured thereto.

i 4. In combination, a vertically movable jolt ramming table and a plurality of different sized pattern drawing machines adapted to be secured thereto.

y5. In combination a vertically movable ro jolt ramming table and a plurality of pattern drawing machines adapted to be secured removably thereto.

6. In combination, a vertically movable jolt ramming tableiprovided with dowel pins and a plurality of pattern drawing machines l 5 having sockets for the reception Aof said dowel pins.

7 Incombinationf a vertically movable jolt ramming table, and a pattern drawing machine secured thereto.

In testimony whereof I have hereunto signed my name in the presence of the two subscribed witnesses. v

EDGAR H. MUMFORD. 

